3 Axles Flatbed Semi Trailer. There is a sound system with 3 kinds of engine sound and 4 kinds of speaker sound. And you can add the separate whistle sound and separate speaker sound system also. There is a LED light system with 7 kinds of light（High beam, Low beam, Toplight, Back-up light, Brake lamp, Turn signal, Fog light）and a BB ring alarm sound.
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